Io Hvac Controls HD-NA-2010 Zone Damper 20x10 No Actuator

Product Description

The IO HVAC CONTROLS HD-NA-2010 is a two-position zone damper sized at 20 inches by 10 inches, supplied without an actuator. It is designed to control airflow in residential and light-commercial HVAC zoning systems by fully opening or fully closing a duct zone on demand from a zone control board or thermostat. The damper ships with a 5/8-inch to 1/2-inch shaft configuration, allowing installers to match it to a separately sourced actuator. Licensed HVAC technicians and sheet metal contractors are the primary installers of this component.

This damper fits into rectangular duct systems where zoned forced-air climate control is required. It is commonly installed in new construction and retrofit applications where a single air handler serves multiple zones. The no-actuator configuration gives contractors the flexibility to specify their own actuator to meet torque requirements, control voltage, or spring-return preferences for the specific zoning application. It is well suited for residential multi-zone systems and smaller commercial air distribution layouts.

Key Features

• Two-position (open/closed) operation for zone airflow control
• 20 inches by 10 inches duct opening size
• Supplied without actuator for flexible actuator pairing
• 5/8-inch to 1/2-inch shaft accommodates a range of compatible actuators
• Rectangular damper body suited for standard rectangular duct systems

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular forced-air duct systems requiring a 20-inch by 10-inch two-position damper with a 5/8-inch to 1/2-inch shaft.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with local mechanical codes and SMACNA duct construction standards. Always shut down the air handler and de-energize the control system before installing or servicing the damper. The actuator must be sourced and mounted separately; verify the actuator torque rating and control voltage match the zone control board before wiring. Ensure the damper blade moves freely through its full travel before restoring power.